AttrakDiff – Scientifically measure user experience

Single Evaluation

This type of evaluation lends itself to one-off and temporary evaluations by your customers.

Example: A software-prototype P was evaluated by future users using AttrakDiff. Ten users participated in the evaluation and the results were following:

The prototype was rated well in both hedonic and pragmatic quality. There was little room for optimisation.

The confidence rectangle shows that according to user consensus, the hedonic quality is greater than the pragmatic quality. For prototype P the confidence rectangle extends from the desired area and into the self-oriented area. It can therefore not clearly be classified as desirable.

Comparison A-B

This type of study assesses each of the two different products separately and then compares them. You will be provided with an overview of how your customers perceive each of the products. You can decide whether both products are evaluated by the same test group, or whether product A and product B are evaluated by completely different test groups.

Each of the two products was evaluated by the 8 test participants (total of 8) using AttrakDiff. The results were the following:

Product A performed better in both hedonic and pragmatic quality than product B. The smaller confidence rectangle observed for product A implies that users were largely at one. For product B however, the user responses differed greatly. In order that product B become competitive with product A it is necessary that improvements be made.

Comparison Before-After

This type of study allows you to test your product twice, e.g. before you implement changes and after you have implemented changes. You will receive a quick and detailed summary on the effects of the changes.

In this case AttrakDiff was implemented to evaluate a website before and after its relaunch (total of 20 test participants). Ten users participated in each of the sub-evaluations and the outcome was as follows:

The “before”-study showed the website to be in the neutral area which corresponds to ordinary standards. Following the relaunch evaluations showed both pragmatic quality as well as hedonic quality to have improved greatly. The website is predominantly desirable. The “after”-study shows a much smaller confidence rectangle implying that the users were largely at one in their ratings compared with the “before”-study.

Why Free of Charge?

By using AttrakDiff as often as possible you contribute to making the construct of product attractiveness scientifically tangible. AttrakDiff also provides you with an easy-to-use tool for graphically presenting interface quality.

The version of AttrakDiff presented here serves the following objectives:

• Broad application of the instrument should provide further insights into evaluation quality criteria, support continued development of the instrument and refine the underlying theoretical model.
• AttrakDiff should be used as a research instrument, for example to determine which design measures improve hedonic quality.
• It should encourage discussion about whether usability criteria such as effectiveness, efficiency and satisfaction are sufficient for evaluating products or whether the criteria described here are equally important.

For these purposes the instrument is made freely available through this website.

Data Protection

We utilise only your anonymous data. Data is not transferred to third parties, other companies or businesses.

When products are evaluated, only neutralised results and general participant information such as age and gender are stored. If you use the automatic email function to notify participants, this data is accessible only to you and is used solely for this purpose.

We do not have any information or means of contacting your customers.

Only you know who your customer is.